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# DoubleToLongFunction

`public interface DoubleToLongFunction`
``

java.util.function.DoubleToLongFunction

Represents a function that accepts a double-valued argument and produces a long-valued result. This is the `double`-to-`long` primitive specialization for `Function`.

This is a functional interface whose functional method is `applyAsLong(double)`.

See also:

- `Function`

## Summary

### Public methods
`abstract long` | `applyAsLong(double value)` Applies this function to the given argument.

## Public methods

### applyAsLong

    public abstract long applyAsLong (double value)

Applies this function to the given argument.

Parameters
`value` | `double`: the function argument

Returns
`long` | the function result

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